WO2013000549A3 - Pressure medium system, in particular hydraulic system - Google Patents

Pressure medium system, in particular hydraulic system Download PDF

Info

Publication number
WO2013000549A3
WO2013000549A3 PCT/EP2012/002598 EP2012002598W WO2013000549A3 WO 2013000549 A3 WO2013000549 A3 WO 2013000549A3 EP 2012002598 W EP2012002598 W EP 2012002598W WO 2013000549 A3 WO2013000549 A3 WO 2013000549A3
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
ist
fluid pump
fluid pressure
setpoint value
Prior art date
Application number
PCT/EP2012/002598
Other languages
German (de)
French (fr)
Other versions
WO2013000549A2 (en
Inventor
Winfried Ehrhardt
Georg WESTERHAGEN
Original Assignee
Ludwig Ehrhardt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102011105584.7A external-priority patent/DE102011105584B4/en
Priority claimed from DE102011112701.5A external-priority patent/DE102011112701B4/en
Application filed by Ludwig Ehrhardt Gmbh filed Critical Ludwig Ehrhardt Gmbh
Priority to EP12728408.1A priority Critical patent/EP2601416B1/en
Priority to US14/128,173 priority patent/US9279434B2/en
Priority to ES12728408.1T priority patent/ES2540221T3/en
Publication of WO2013000549A2 publication Critical patent/WO2013000549A2/en
Publication of WO2013000549A3 publication Critical patent/WO2013000549A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/251—High pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/26—Power control functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The invention relates to a pressure medium system, in particular a hydraulic system, having a fluid pump (1) for delivering a drive fluid with a certain delivery flow rate and a certain fluid pressure (PIST), and having a control unit (8) which switches the fluid pump (1) on or off in order to set a predefined setpoint value (PSOLL) of the fluid pressure (PIST), wherein the fluid pump (1) exhibits an inertia-induced overrun when switched off, such that during the overrun of the fluid pump (1), the fluid pressure still rises while the fluid pump (1) has already been switched off. It is proposed that, during the increase of the fluid pressure (PIST) to the predefined setpoint value, the control unit (8) switches the fluid pump (1) off before the fluid pressure (PIST) has reached the predefined setpoint value (PSOLL). The invention also comprises a corresponding operating method.
PCT/EP2012/002598 2011-06-27 2012-06-20 Pressure medium system, in particular hydraulic system WO2013000549A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12728408.1A EP2601416B1 (en) 2011-06-27 2012-06-20 Pressure medium system, in particular hydraulic system
US14/128,173 US9279434B2 (en) 2011-06-27 2012-06-20 Pressure medium system, in particular hydraulic system
ES12728408.1T ES2540221T3 (en) 2011-06-27 2012-06-20 Pressure medium system, in particular hydraulic system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102011105584.7 2011-06-27
DE102011105584.7A DE102011105584B4 (en) 2011-06-27 2011-06-27 Pressure medium system, in particular hydraulic system
DE102011112701.5 2011-09-05
DE102011112701.5A DE102011112701B4 (en) 2011-09-05 2011-09-05 Pressure medium system, in particular hydraulic system

Publications (2)

Publication Number Publication Date
WO2013000549A2 WO2013000549A2 (en) 2013-01-03
WO2013000549A3 true WO2013000549A3 (en) 2013-02-28

Family

ID=46320885

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/002598 WO2013000549A2 (en) 2011-06-27 2012-06-20 Pressure medium system, in particular hydraulic system

Country Status (4)

Country Link
US (1) US9279434B2 (en)
EP (1) EP2601416B1 (en)
ES (1) ES2540221T3 (en)
WO (1) WO2013000549A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101816432B1 (en) * 2016-08-26 2018-01-08 현대자동차주식회사 Method for controlling Air-conditioner compressor
DE102022116812A1 (en) 2022-07-06 2024-01-11 Voith Patent Gmbh Pressure maintenance function for machine presses

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5829335A (en) * 1993-05-11 1998-11-03 Mannesmann Rexroth Gmbh Control for hydraulic drive or actuator
US20040098984A1 (en) * 2002-11-26 2004-05-27 Duell Charles A. Combination hydraulic system and electronically controlled vehicle and method of operating same
DE102005002443A1 (en) * 2005-01-19 2006-07-27 Robert Bosch Gmbh Hydraulic actuator controlling method for control valve of intake manifold, involves predicting pressure prevailing at high pressure side of actuator at beginning of stroke adjustment process based on pressure changes in hydraulic system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136177A1 (en) 1981-09-12 1983-03-31 A. Römheld GmbH & Co KG, 6312 Laubach Tightening pump unit
US4842244A (en) * 1987-11-10 1989-06-27 Niagara Mohawk Power Corporation Valve control system for power generating plants
JP2582003B2 (en) * 1991-05-22 1997-02-19 本田技研工業株式会社 Pressure source for pressure equipment
US5669055A (en) 1996-03-29 1997-09-16 Xerox Corporation Dual brush cleaner retraction mechanism and variable inertia drift controller for retractable cleaner
AT409949B (en) * 1997-03-07 2002-12-27 Weber Gisela CONTROL DEVICE FOR HYDRAULIC WORK CYLINDERS
DE19713576A1 (en) 1997-04-02 1998-10-08 Bosch Gmbh Robert Method and device for operating a steering system for a motor vehicle
DE19959706B4 (en) 1999-12-10 2010-11-18 Robert Bosch Gmbh Method and device for controlling the braking torque of a brake force regulator on at least one wheel of a motor vehicle
DE102005060321A1 (en) * 2005-12-16 2007-06-21 Robert Bosch Gmbh Method and device for reducible production of a predefinable final pressure in a brake system
JP4629747B2 (en) * 2008-02-26 2011-02-09 日精樹脂工業株式会社 Method for controlling mold clamping device
NO328603B1 (en) * 2008-05-14 2010-03-29 Vetco Gray Scandinavia As Underwater hybrid valve actuator system and method.
DE202008011507U1 (en) 2008-08-29 2010-01-07 Gea Westfaliasurge Gmbh Safety switching device for a milking carousel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5829335A (en) * 1993-05-11 1998-11-03 Mannesmann Rexroth Gmbh Control for hydraulic drive or actuator
US20040098984A1 (en) * 2002-11-26 2004-05-27 Duell Charles A. Combination hydraulic system and electronically controlled vehicle and method of operating same
DE102005002443A1 (en) * 2005-01-19 2006-07-27 Robert Bosch Gmbh Hydraulic actuator controlling method for control valve of intake manifold, involves predicting pressure prevailing at high pressure side of actuator at beginning of stroke adjustment process based on pressure changes in hydraulic system

Also Published As

Publication number Publication date
WO2013000549A2 (en) 2013-01-03
US20140130484A1 (en) 2014-05-15
US9279434B2 (en) 2016-03-08
ES2540221T3 (en) 2015-07-09
EP2601416B1 (en) 2015-04-15
EP2601416A2 (en) 2013-06-12

Similar Documents

Publication Publication Date Title
WO2011117831A3 (en) System, apparatus, and method for rapid pump displacement configuration
WO2007035567A3 (en) Infusion pump with closed loop control and algorithm
WO2012037516A3 (en) Valve actuator control system and method of use
WO2014000726A3 (en) Device and method for the controllable delivery of at least one medium
WO2012145208A3 (en) Overrunning pump protection for flow-controlled actuators
AU2015261544B2 (en) Operating method for a pump, in particular for a multiphase pump, and pump
GB0614939D0 (en) Digital hydraulic system for driving a fan
PL1929253T3 (en) Method for controlling a dosing apparatus for liquid or pasty media
WO2007067358A3 (en) System and method for pressure compensation in a pump
WO2010075212A3 (en) Hydraulic control system utilizing feed-foward control
WO2012054344A3 (en) Hydraulic drive circuit with parallel architectured accumulator
WO2010121171A3 (en) System and method for pump with deformable bearing surface
WO2009019017A3 (en) Rotational pump and methods for controlling rotational pumps
WO2013006423A3 (en) Hydraulic systems utilizing combination open-and closed-loop pump systems
WO2010067189A8 (en) Hydraulic control apparatus and hydraulic control method
WO2007098287A3 (en) Flow control system and method with variable pressure and variable resistance
PH12016502289B1 (en) Method for controlling a pump arrangement
EP1830066A3 (en) Hydraulic control apparatus of working machine
TW200635707A (en) Control of fluid conditions in bulk fluid distribution systems
WO2012100864A3 (en) Control device for a brake system of a vehicle, brake system and method for operating a brake system for a vehicle
GB201114619D0 (en) Method for controlling a pressure supply unit for a fluid assembly, and corresponding fluid assembly
EP2610135A3 (en) Hydraulic power steering system
MX2017008269A (en) Brake system and controller for use with a wellhead direct drive.
WO2008055147A3 (en) System and method for pilot-operated high pressure valve
WO2013000549A3 (en) Pressure medium system, in particular hydraulic system

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2012728408

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12728408

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 14128173

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE